Physics Questions Practice Question and Answer
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Q: What is the refractive index of diamond?
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5f6da978f9079a64e3c0a995- 11.77false
- 21.47false
- 31.44false
- 42.42true
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Answer : 4. "2.42"
Q: The shortest unit of length is:
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61655af33d260361529b0632- 1Angstromsfalse
- 2Fermi metertrue
- 3Micronfalse
- 4Nanometerfalse
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Answer : 2. "Fermi meter "
Q: What type of magnet is used in commercial motors?
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5fe45c0c57a5647868b60225- 1Permanent magnetfalse
- 2umbilical magnetfalse
- 3electromagnettrue
- 4Common rod magnetfalse
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Answer : 3. "electromagnet"
Q: Pressure inside a soap bubble is-
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6062c4148278fd4419261ced- 1More than atmospheric pressuretrue
- 2Less than atmospheric pressurefalse
- 3Equal to atmospheric pressurefalse
- 4Half of atmospheric pressure/false
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Answer : 1. "More than atmospheric pressure"
Q: Which of the following statements is not correct?
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5f8fd438c380c466d4dd1840- 1The velocity of sound in air increases as the temperature increases.false
- 2The velocity of sound in air does not depend on pressure.false
- 3The velocity of sound in air decreases with the increase of humidity.true
- 4Noise velocity in air is not affected by change in amplitude and frequency.false
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Answer : 3. "The velocity of sound in air decreases with the increase of humidity."
Q: The best conductor of heat is?
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6137464a2421ea1e0c7df9fb- 1Silvertrue
- 2goldfalse
- 3copperfalse
- 4Aluminumfalse
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Answer : 1. "Silver"
Q: Which point in the human eye is not very sensitive to light, is it called?
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5fe42412eee69a704db5d664- 1Yellow Pointfalse
- 2blind pointtrue
- 3near pointfalse
- 4focal pointfalse
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Answer : 2. "blind point"
Q: An iron needle floats on the surface of water. What is the reason for this phenomenon?
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613744053ee2bf25f5130f7f- 1viscosityfalse
- 2acceleration due to gravityfalse
- 3surface tensiontrue
- 4none of thesefalse
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Answer : 3. "surface tension"
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